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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-19 13:04:15 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -14.4343 Longitude: 155.8033 Position from underway logging |
| Sample number: | in2019_v04_D29_008 |
| Dredge: | D29 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 4 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | white | red |
| Composition: | mafic |
| Groundmass: | altered |
| Features: | hyaloclastite |
| Vesicle abundance: | 10-30% |
| Vesicle Filling (%): | 50 |
| Vesicle fill: | calcite |
| Alteration: | Mn crust | altered |
| Grain size: | pebble (2-64 mm) |
| Grain shape: | angular |
| Sorting: | poor |
| Components: | volcanic vesicular | volcanic non-vesicular |
| Cement: | calcite |
| Sample bagged: | yes |
| Bucket number: | 38 |
| Rock name: | Variably altered vesicular monomictic basalt hyaloclastite |
| Comments: | 1-2 cm thick dense and shiny core in Mn crust - white matrix filled with calcite between clasts - zigsaw fitting between clasts - alteration with clasts varies |